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AdaptiveLoadBalancingRouter and more refactoring of metrics, see #2547

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* Refactoring of standard metrics extractors and data structures
* Removed optional value in Metric, simplified a lot
* Configuration of EWMA by using half-life duration
* Renamed DataStream to EWMA
* Incorporate review feedback
* Use binarySearch for selecting weighted routees
* More metrics selectors for the router
* Removed network metrics, since not supported on linux
* Configuration of router
* Rename to AdaptiveLoadBalancingRouter
* Remove total cores metrics, since it's the same as jmx getAvailableProcessors,
  tested on intel 24 core server and amd 48 core server, and MBP
* API cleanup
* Java API additions
* Documentation of metrics and AdaptiveLoadBalancingRouter
* New cluster sample to illustrate metrics in the documentation,
  and play around with (factorial)
This commit is contained in:
Patrik Nordwall 2012-11-08 18:49:54 +01:00
parent c9d206764a
commit dcde7d3594
61 changed files with 1885 additions and 975 deletions
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15
akka-cluster/src/main/scala/akka/cluster/ClusterEvent.scala
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@ -10,6 +10,8 @@ import akka.cluster.ClusterEvent._
import akka.cluster.MemberStatus._
import akka.event.EventStream
import akka.actor.AddressTerminated
import java.lang.Iterable
import scala.collection.JavaConverters
/**
* Domain events published to the event bus.
@ -139,11 +141,18 @@ object ClusterEvent {
}
/**
* INTERNAL API
*
* Current snapshot of cluster member metrics. Published to subscribers.
* Current snapshot of cluster node metrics. Published to subscribers.
*/
case class ClusterMetricsChanged(nodes: Set[NodeMetrics]) extends ClusterDomainEvent
case class ClusterMetricsChanged(nodeMetrics: Set[NodeMetrics]) extends ClusterDomainEvent {
/**
* Java API
*/
def getNodeMetrics: java.lang.Iterable[NodeMetrics] = {
import scala.collection.JavaConverters._
nodeMetrics.asJava
}
}
/**
* INTERNAL API